@media (max-width: 680px) {
  .mobile-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 58px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--line);
    background: var(--surface-glass);
    backdrop-filter: blur(16px);
  }

  .mobile-topbar .theme-switcher {
    width: auto;
    margin: 0 0 0 auto;
  }

  .mobile-topbar .theme-switcher span {
    display: none;
  }

  .shell {
    display: block;
  }

  .shell .erp-app-topbar {
    position: sticky;
    top: 0;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    min-height: 58px;
    padding: 8px 10px;
  }

  .mobile-topbar {
    display: none;
  }

  .erp-global-search {
    min-width: 0;
    width: min(52vw, 260px);
    padding-inline: 10px 4px;
  }

  .erp-global-search input {
    width: 1px;
  }

  .erp-topbar-actions {
    gap: 6px;
  }

  .erp-user-menu-button {
    padding: 3px;
  }

  .sidebar {
    position: fixed;
    inset: 58px auto 0 0;
    z-index: 40;
    width: min(86vw, 320px);
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  .shell.nav-open .sidebar {
    transform: translateX(0);
  }

  .nav-overlay {
    position: fixed;
    inset: 58px 0 0;
    z-index: 35;
    background: rgba(15, 23, 42, 0.42);
  }

  body:has(.shell.nav-open) .nav-overlay {
    display: block;
  }

  .content {
    padding: 14px;
  }

  .erp-page-header,
  .erp-cabinet-footer {
    display: grid;
    align-items: start;
  }

  .erp-page-actions {
    display: none;
  }

  .erp-visual-hero {
    display: grid;
    padding: 20px;
  }

  .metric-grid,
  .metric-grid.is-five,
  .metric-grid.is-dense,
  .marketplace-matrix {
    grid-template-columns: minmax(0, 1fr);
    grid-auto-flow: row;
    grid-template-rows: none;
  }

  .dashboard-kpi-section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .dashboard-kpi-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .erp-widget {
    min-height: 198px;
  }

  .erp-widget-chart {
    height: 70px;
  }

  .erp-widget-footer {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand span,
  .nav-label,
  .nav-group-title {
    display: inline;
  }

  .public-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 10px;
  }

  .public-topbar,
  .public-nav {
    display: grid;
    justify-items: start;
  }

  .public-hero,
  .public-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .public-hero {
    padding: 22px;
  }

  .public-hero h1 {
    font-size: clamp(30px, 12vw, 44px);
  }
}